i think professor yoo is absolutely right that the department beach i was going to prevent the use of force in places where the use of force would improve human welfare. he had mentioned that the number of great power wars and the people that have died has diminished in year 0 cents the institution of the united nations. but at the same time, the number of internal struggles, low intensity conflicts around the world has gone way up as have the number of people dying in those conflicts all over the world. the idea of saying you can improve human welfare by intervening in these conflicts and preventing these conflicts from having the humanitarian disasters in many cases is a legitimate use of force, that it is a use of force is actually forbidden by the u.n. charter now unless we can get russia, china and the united states to all agree at the same time that this is a place where you want to use force. the only other exception would be article li, self-defense and in most cases that does not apply. another point that professor yoo makes in his book at various at least an undercurrent of